package com.member.server.config;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;

import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

/**
 * Spring Bean管理
 *
 * @author junxiang.gao
 * @since 2021/11/9
 */
@Configuration
public class SpringBeanConfig {

    /**
     * 引入Fastjson解析json，不使用默认的jackson必须在pom.xml
     * 引入fastjson的jar包，并且版必须大于1.2.10
     */
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        //1、定义一个convert转换消息的对象
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();

        //2、添加fastjson的配置信息
        FastJsonConfig fastJsonConfig = new FastJsonConfig();

        fastJsonConfig.setSerializerFeatures(SERIALIZER_FEATURES);
        // 处理日期格式
        fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
        fastJsonConfig.setCharset(StandardCharsets.UTF_8);
        //处理中文乱码问题
        List<MediaType> fastMediaTypes = new ArrayList<>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON);
        fastConverter.setSupportedMediaTypes(fastMediaTypes);
        //3、在convert中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);

        //4、将convert添加到converters中
        return new HttpMessageConverters(fastConverter);
    }

    public static final SerializerFeature[] SERIALIZER_FEATURES = new SerializerFeature[]{
            //    输出key是包含双引号
            SerializerFeature.QuoteFieldNames,
            //    是否输出为null的字段,若为null 则显示该字段
            SerializerFeature.WriteMapNullValue,
            //    数值字段如果为null，则输出为0
            //SerializerFeature.WriteNullNumberAsZero,
            //     List字段如果为null,输出为[],而非null
            SerializerFeature.WriteNullListAsEmpty,
            //    字符类型字段如果为null,输出为"",而非null
            //SerializerFeature.WriteNullStringAsEmpty,
            //    Boolean字段如果为null,输出为false,而非null
            //SerializerFeature.WriteNullBooleanAsFalse,
            //SerializerFeature.WriteNonStringValueAsString,
            //    Date的日期转换器
            SerializerFeature.WriteDateUseDateFormat,
            //    循环引用
            SerializerFeature.DisableCircularReferenceDetect,
    };

}
